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Finding the Fourth Proportional to 18,832.78, 28,250.83 and 6,986.69

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Solution

The fourth proportional to 18,832.78, 28,250.83 and 6,986.69 is: 10,480.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,832.78 : 28,250.83 = 6,986.69 : x
  2. Step 2: Convert to fraction form
    18,832.78/28,250.83 = 6,986.69/x
  3. Step 3: Cross multiply
    18,832.78x = 28,250.83 × 6,986.69
  4. Step 4: Simplify right side
    18,832.78x = 197,379,791.45
  5. Step 5: Solve for x
    x = 197,379,791.45/18,832.78
  6. Step 6: Final answer
    x = 10,480.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.